BE486554A - - Google Patents

Info

Publication number
BE486554A
BE486554A BE486554DA BE486554A BE 486554 A BE486554 A BE 486554A BE 486554D A BE486554D A BE 486554DA BE 486554 A BE486554 A BE 486554A
Authority
BE
Belgium
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication date
Publication of BE486554A publication Critical patent/BE486554A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/38—Telescopic props with parts held relatively to each other by friction or gripping with longitudinally-divided upper or lower prop parts, e.g. interfitting laminations
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/40—Collar or other support gripped to one or both parts by toggle-action, cam, or other member pivoted or similarly mounted

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
BE486554D 1948-10-15 BE486554A (id)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE485322T 1948-10-15
BE486554T 1948-12-29

Publications (1)

Publication Number Publication Date
BE486554A true BE486554A (id) 1949-06-29

Family

ID=132194

Family Applications (1)

Application Number Title Priority Date Filing Date
BE486554D BE486554A (id) 1948-10-15

Country Status (1)

Country Link
BE (1) BE486554A (id)

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